<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .calendar{
            width:450px;
            height:350px;
            background:#fff;
            box-shadow:0px 1px 1px rgba(0,0,0,0.1);
        }
        .body-list ul{
            width:100%;
            font-family:arial;
            font-weight:bold;
            font-size:14px;
        }
        .body-list ul li{
            width:14.28%;
            height:36px;
            line-height:36px;
            list-style-type:none;
            display:block;
            box-sizing:border-box;
            float:left;
            text-align:center;
        }
        .lightgrey{
            color:#a8a8a8; /*浅灰色*/
        }
        .darkgrey{
            color:#565656; /*深灰色*/
        }
        .green{
            color:#6ac13c; /*绿色*/
        }
        .greenbox{
            border:1px solid #6ac13c;
            background:#e9f8df; /*浅绿色背景*/
        }
    </style>
</head>
<body>
<div class="calendar">
    <div class="title">
        <h1 class="green" id="calendar-title">Month</h1>
        <h2 class="green small" id="calendar-year">Year</h2>
        <a href="" id="prev">Prev Month</a>
        <a href="" id="next">Next Month</a>
    </div>
    <div class="body">
        <div class="lightgrey body-list">
            <ul>
                <li>MON</li>
                <li>TUE</li>
                <li>WED</li>
                <li>THU</li>
                <li>FRI</li>
                <li>SAT</li>
                <li>SUN</li>
            </ul>
        </div>
        <div class="darkgrey body-list">
            <ul id="days">
            </ul>
        </div>
    </div>
</div>

</body>
</html>